1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1240daae7b04685a43c91dbfa9071bf3bb6ea279f2462cac17cf819c81c8c7c6. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4ee7ac9e-437f-479d-844d-87606b46abbf.json and https://artists.proofprofile.net/proofs/artist/4ee7ac9e-437f-479d-844d-87606b46abbf.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → block OTSBitcoinBlock must exist at that height 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab7594a70844d03420afde74abb3059b4e9bfd2e2dbba599cb3b5271ee0a61c7. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRX282514969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66d0cb9e1dc65eca603f753ae971fd5480c96bca5776d0776801f5e4f1a1626e. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRX282514976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5b6783eb1d42af8df69b100ae1eaf6b882e14591593ea49ad4e060b53f2ecb4. Chain 2 (Bitcoin): anchored in block 958432 (2026-07-17T15:43:17Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TR0410645777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b82ad9077290f2f2dc718246af7fc55defec9d7ef8d77ab895ab919caa6948e. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TR0410644799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7580a64fcfd50c1d8c40f38c1db131e84b9867dc0c0b47ee490913ee14857e2d. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TR0410644066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb51a6810be5e7f2076e87d4a132a1a18eeeaef8ba16681766425d030ab73eb9. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEWP61701239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75552d477f8a8307970c58fc155dc1ce1299b00112d0599e12c82d5c443d1045. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRX282207518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8be34a791e91ab213561149775a18b12f2005e2aab562da3bb632d9ca14d9b9. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TR3731400550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2279aac18be18f860b54636f6e20b4fde79456068fd0272ff11f9bad49a95836. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TR3731400554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc48db2d6668f6695e264d65147cd4543e9b1aae485bfbd9b9fa81113ffd21cc. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TR3731400558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x139def09695710f632961ee890ee22d6762f26d0cdcdb350f1f96b5cc3e3f109. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TR3731400559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ec3e2c935847761e31c5980d1fabeb68deb13718d653643b94efbd788172f00. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRX762286032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaf2834a941ae5054a08e11687f9066725106ca315c132ec3b6e5d548cb16d2c. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TR3021900108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb025d4bdb2de8c499d09c8fc31165ee8f91bdfc180ff71d28900b6da744cd8ed. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:44:58Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TR3713030000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x341b382bf6c6d5fdebe96cbd697a2ca9a69b7369276667a004dab7838374a96a. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TR3713030006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3351e2e91426be8e8abd9329ed5d3815806004333afe52a46441c8db5d0675a. Chain 2 (Bitcoin): anchored in block 958322 (2026-07-16T23:29:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TR3713030010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba143cd386e420d539dd42d68ae5c1edc7c3cdf9be5dd8336ed7be94674588b1. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TR3713030012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x235a6602f616d4891d49c62bea7a6ed80693ac0c4aae44001d9a6c8bf0d2cc45. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TR3713030017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc61774a37db26281b110e3400d1b1a39f80d2ae6cf71fb28626df66f8f53723. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TR3713030019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e7442271d8254f93408e799a4fb501b5d78d646471d96a98991f9502c429962. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TR3713030022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd727cd21a3ba3a19430867d8342b51e4219d5f46e9219791ed9e58eb2cb19a5f. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TR3713030028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76fe5742c4fdc39be15934f861ccea7f626e5015c82452ab5f147c9d8c968309. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TR3731300203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ec75de23d531ed9a860bae04fe0cc266e9233e56e7e544a1e7046f81322cb49. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMFME2299520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85614dd6ced10a6dc72af1f25ed08572da9fd463c39b59027652a55a456f946e. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TRAPL1400074.